“Carrie was the most amazing, selfless person I have ever met. We all feel extremely sad right now, but we know we will see her again,” Sonya Nelson, DeKlyen’s sister-in-law, told InsideEdition.com.

DeKlyen was diagnosed with glioblastoma, a rapidly growing tumor that can affect the brain and spinal cord, in April. Undergoing chemotherapy would have forced the mother to terminate her sixth pregnancy.

DeKleyn reportedly qualified to be in a University of Michigan clinical trial for her cancer that doctors said might have extended her life another 10 to 20 years, however, she and her husband declined because they are Christians and wanted to give their child a chance to live.

"We’re pro-life,” Nick DeKlyen, Carrie’s husband, told the Detroit Free Press. "Under no circumstance do we believe you should take a child's life. She sacrificed her life for the child.”

The couple has five other children ranging in age from 2 to 18 years old.

Life Lynn was born on Wednesday at 1 pound and 4 ounces. DeKlyen’s feeding and breathing tubes were removed the next day.

“Life is doing really good! She is so tiny, but definitely a fighter. Carrie is off all support and is in her final hours,” the family wrote on the Facebook page “Cure 4 Carrie," before the mom's passing.

The family said the baby girl will be in the NICU for four to five months but that they expect her to be healthy.